diff --git a/lnbits/core/views/generic.py b/lnbits/core/views/generic.py
index fc79936b7..7e3c9da03 100644
--- a/lnbits/core/views/generic.py
+++ b/lnbits/core/views/generic.py
@@ -95,11 +95,10 @@ async def extensions_install(
         installed_exts: List["InstallableExtension"] = await get_installed_extensions()
         installed_exts_ids = [e.id for e in installed_exts]
 
-        installable_exts: List[
-            InstallableExtension
-        ] = await InstallableExtension.get_installable_extensions()
+        installable_exts = await InstallableExtension.get_installable_extensions()
+        installable_exts_ids = [e.id for e in installable_exts]
         installable_exts += [
-            e for e in installed_exts if e.id not in installed_exts_ids
+            e for e in installed_exts if e.id not in installable_exts_ids
         ]
 
         for e in installable_exts: